Oxygen reduction reaction properties of vacuum-deposited Pt on thermally grown epitaxial graphene layers

2022 ◽  
Vol 40 (1) ◽  
pp. 013216
Author(s):  
Masashi Watanabe ◽  
Takafumi Kanauchi ◽  
Yoshihiro Chida ◽  
Kenta Hayashi ◽  
Naoto Todoroki ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Epitaxial Graphene ◽  
Reduction Reaction ◽  
Graphene Layers ◽  
Thermally Grown

Nitrogen-doped graphene layers for electrochemical oxygen reduction reaction boosted by lattice strain

2019 ◽  
Vol 378 ◽  
pp. 113-120 ◽  
Author(s):  
Jia Li ◽  
Jin-Xun Liu ◽  
Xueqiang Gao ◽  
Bryan R. Goldsmith ◽  
Yuanyuan Cong ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Lattice Strain ◽  
Reduction Reaction ◽  
Graphene Layers ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Electrochemical Oxygen

scholarly journals Encapsulated FeP nanoparticles with in-situ formed P-doped graphene layers: Boosting activity in oxygen reduction reaction

2020 ◽  
Vol 64 (5) ◽  
pp. 1159-1172
Author(s):  
Baoxia Ni ◽  
Rui Chen ◽  
Luming Wu ◽  
Pingchuan Sun ◽  
Tiehong Chen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Graphene Layers ◽  
Doped Graphene

Enhanced electrochemical oxygen reduction reaction by restacking of N-doped single graphene layers

RSC Advances ◽  
2013 ◽  
Vol 3 (13) ◽  
pp. 4246 ◽  
Author(s):  
Chang Hyuck Choi ◽  
Min Wook Chung ◽  
Sung Hyeon Park ◽  
Seong Ihl Woo
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Graphene Layers ◽  
Electrochemical Oxygen

Enhancing oxygen reduction reaction durability via coating graphene layers on iron-nitrogen supported carbon nanotubes

RSC Advances ◽  
2016 ◽  
Vol 6 (77) ◽  
pp. 73581-73588 ◽  
Author(s):  
Cai-Di Liu ◽  
Guang-Lan Li ◽  
Guang-Chun Cheng ◽  
Ce Hao ◽  
Si-Mei Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Graphene Layers

Fe-N-CNT@GN catalyst was designed through coating several graphene layers derived from the disodium edentate to enhance ORR durability.

N and S Co-doped Ordered Mesoporous Carbon: An Efficient Electrocatalyst for Oxygen Reduction Reaction in Microbial Fuel Cells

2020 ◽  
Vol 16 (4) ◽  
pp. 625-638
Author(s):  
Leila Samiee ◽  
Sedigheh Sadegh Hassani
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Carbon Substrate ◽  
Promising Candidate ◽  
X Ray ◽  
Carbon Framework ◽  
Co Doped

Background: Porous carbon materials are promising candidate supports for various applications. In a number of these applications, doping of the carbon framework with heteroatoms provides a facile route to readily tune the carbon properties. The oxygen reduction reaction (ORR), where the reaction can be catalyzed without precious metals is one of the common applications for the heteroatom-doped carbons. Therefore, heteroatom doped catalysts might have a promising potential as a cathode in Microbial fuel cells (MFCs). MFCs have a good potential to produce electricity from biological oxidization of wastes at the anode and chemical reduction at the cathode. To the best of our knowledge, no studies have been yet reported on utilizing Sulfur trioxide pyridine (STP) and CMK-3 for the preparation of (N and S) doped ordered porous carbon materials. The presence of highly ordered mesostructured and the synergistic effect of N and S atoms with specific structures enhance the oxygen adsorption due to improving the electrocatalytic activity. So the optimal catalyst, with significant stability and excellent tolerance of methanol crossover can be a promising candidate for even other storage and conversion devices. Methods: The physico-chemical properties of the prepared samples were determined by Small Angle X-ray Diffraction (SAXRD), N2 sorption-desorption, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM) and X-ray Photoelectron Spectroscopy (XPS). The prepared samples were further applied for oxygen reduction reaction (ORR) and the optimal cathode was tested with the Microbial Fuel Cell (MFC) system. Furthermore, according to structural analysis, The HRTEM, and SAXRD results confirmed the formation of well-ordered hexagonal (p6mm) arrays of mesopores in the direction of (100). The EDS and XPS approved that N and S were successfully doped into the CMK-3 carbon framework. Results: Among all the studied CMK-3 based catalysts, the catalyst prepared by STP precursor and pyrolysis at 900°C exhibited the highest ORR activity with the onset potential of 1.02 V vs. RHE and 4 electron transfer number per oxygen molecule in 0.1 M KOH. The high catalyst durability and fuel-crossover tolerance led to stable performance of the optimal cathode after 5000 s operation, while the Pt/C cathode-based was considerably degraded. Finally, the MFC system with the optimal cathode displayed 43.9 mW·m-2 peak power density showing even reasonable performance in comparison to a Pt/C 20 wt.%.cathode. Conclusions: The results revealed that the synergistic effect of nitrogen and sulfur co-doped on the carbon substrate structure leads to improvement in catalytic activity. Also, it was clearly observed that the porous structure and order level of the carbon substrate could considerably change the ORR performance.

Single copper sites dispersed on defective TiO2−x as a synergistic oxygen reduction reaction catalyst

2021 ◽  
Vol 154 (3) ◽  
pp. 034705
Author(s):  
Minchan Li ◽  
Ning Qin ◽  
Zongwei Ji ◽  
Qingmeng Gan ◽  
Zhenyu Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Copper Sites ◽  
Oxygen Reduction Reaction Catalyst

scholarly journals Biomass wood-derived efficient Fe–N–C catalysts for oxygen reduction reaction

2021 ◽  
Author(s):  
Dingding Li ◽  
Zheng Han ◽  
Kunyue Leng ◽  
Shenghua Ma ◽  
Yi Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction

scholarly journals Porous Carbon Networks Derived From Graphitic Carbon Nitride for Efficient Oxygen Reduction Reaction

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Chenxia Li ◽  
Xuesong Li ◽  
Xiaojuan Sun ◽  
Xueyu Zhang ◽  
Lianfeng Duan ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Carbon Nitride ◽  
Reduction Reaction ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Carbon Networks
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